Determine the ph if 50.0 ml of 0.75 m hi solution is added to 0.027 l of a 0.05 m koh solution

A solution with a pH of 3.47 has an [OH-] of 4.83 x 10^-11 M.

To find the [OH-] of a solution with a pH of 3.47, we can use the relationship between pH and [H+]. pH is defined as the negative logarithm of the hydrogen ion concentration [H+], and [OH-] and [H+] are related through the ion product constant of water, Kw = [H+][OH-] = 1.0 x 10^-14 at 25°C.
To start, we can use the equation for pH:
pH = -log[H+]
Rearranging this equation to solve for [H+], we get:
[H+] = 10^-pH
Substituting the given pH value of 3.47 into this equation, we get:
[H+] = 10^-3.47
[H+] = 2.07 x 10^-4 M
Now that we know the concentration of [H+] in the solution, we can use the ion product constant of water to find [OH-]:
Kw = [H+][OH-]
1.0 x 10^-14 = (2.07 x 10^-4)[OH-]
[OH-] = 4.83 x 10^-11 M
Therefore, a solution with a pH of 3.47 has an [OH-] of 4.83 x 10^-11 M.

for more such question on pH

https://brainly.com/question/12609985

#SPJ8

Answer:

Two Lithium ions and one carbonate ion

Explanation:

Let us look at this equation;

Li2CO3(s) ------->2Li^(aq) + CO3^2-(aq)

We can see that each unit of Li2CO3 has two lithium ions and one carbonate ion.

Let us not forget that Li has a valency of 1 while carbonate ion has a valency of 2. Exchange of valencies gives the final formula of the compound.

Answer:

Two Lithium ions and one carbonate ion

Explanation:

The molar mass of  tin(II) chloride is: 84.9 g

Calculate the molar mass of  tin(II) chloride?

The number of moles n1 is thus:

n1= m1/M1 = 2.25 mol

According to the balanced reaction, the ratio by number of moles n of tin(II) chloride produced to the number of moles n1 of HF used is 1:2

As such, the number of moles of tin(II) chloride produced is :

n = 1/2 \(n_{1}\) = 0.45 mol

The molar mass of tin(II) chloride is:

M= A\(_{r}\)(Sn)+2A\(_{r}\)(Cl) = 188.7 g/mol

The mass m produced is thus:

m = nM

= 0.45 mol × 188.7 g/mol

≈ 84.9 g

Therefore, the molar mass of  tin(II) chloride is: 84.9 g.

To know more about molar mass, check out:

https://brainly.com/question/837939

#SPJ4

The specific heat of the metal is 4.52 J/g°C.

What is specific heat?

Specific heat is the amount of energy needed to raise a substance's temperature by one degree Celsius per gramme. Typically, the units of specific heat are calories or joules per gramme per degree Celsius. The specific heat of water, for instance, is 1 calorie (or 4.186 joules) per gramme per degree Celsius.

The specific heat of a substance is the amount of energy (in joules) needed to raise the temperature of 1 gram of that substance by 1 degree Celsius.
To calculate the specific heat of the metal, we can use the following equation:
Specific heat = (mass of metal × change in temperature of metal) ÷ (mass of water × change in temperature of water)
In this case, the mass of metal is 20.0 g, the change in temperature of metal is 100°C - 28.3°C = 71.7°C, the mass of water is 100.0 g, and the change in temperature of water is 28.3°C - 25.2°C = 3.1°C.
Using these values in the equation gives us:
Specific heat = (20.0 g × 71.7°C) ÷ (100.0 g × 3.1°C)
Specific heat = 4.52 J/g°C
Therefore, the specific heat of the metal is 4.52 J/g°C.

For more information about specific heat please visit:

https://brainly.com/question/27862577

#SPJ4

Answer:

please follow me

Explanation:

eyye6ww6yeyosuyoyo6owy

The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.

The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):

E = V * Q

Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):

Q = E / V

Substituting the given values, we have:

Q = 64 MJ / 330 V

To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:

Q = (64 * 10^6 J) / 330 V

Calculating the division:

Q ≈ 193,939.39 Coulombs

Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.

For more such questions on charge visit:

https://brainly.com/question/18102056

#SPJ8

Hydraulic conductivity, also known as permeability, is a property of porous materials that describes their ability to transmit fluid (typically water) through them. The hydraulic conductivity (K) for the given parameters is approximately 0.1667 m/s.

It represents the ease with which water can flow through a saturated medium under a hydraulic gradient. Hydraulic conductivity is influenced by various factors such as the properties of the porous medium (e.g., particle size, shape, and arrangement), the fluid viscosity, and the pressure gradient. It is commonly expressed in units of velocity, such as meters per second (m/s) or centimeters per second (cm/s).

To calculate the hydraulic conductivity (K) using the given parameters, let's substitute the values into the equation:

\(K = (0.4 * 10^{-3}) / ((\pi * (0.085 / 2)^2) * (0.12 / 0.18))\)

First, we can simplify the expression inside the parentheses:

\(K = (0.4 * 10^{-3}) / ((\pi * (0.0425)^2) * (0.12 / 0.18))\\K = (0.4 * 10^{-3}) / ((\pi * 0.0018025) * (0.12 / 0.18))\\K = (0.4 * 10^{-3}) / (0.0035962 * 0.6667)\\K = (0.4 * 10^{-3}) / 0.0023975\\\\K = 0.1667 m/s\)

Therefore, the hydraulic conductivity (K) for the given parameters is approximately 0.1667 m/s.

For more details regarding hydraulic conductivity, visit:

https://brainly.com/question/31920573

#SPJ4

The molar concentration of NaOH solution is 0.0992 M.


The balanced chemical equation of the reaction between KHP and NaOH is KHP + NaOH → NaKP + H2O. From the equation, one mole of NaOH reacts with one mole of KHP. Therefore, the moles of NaOH used in the reaction can be calculated using the equation: n = m/M where, n = number of moles, m = mass of KHP, and M = molar mass of KHP. The molar mass of KHP is 204.22 g/mol. n = 0.3031 g / 204.22 g/moln = 0.001483 mol.

The molar concentration of NaOH can be calculated using the formula: Molarity = n / V where, V is the volume of NaOH used in the reaction. V = 36.46 mL = 0.03646 L. Molarity = 0.001483 mol / 0.03646 L. Molarity = 0.0406 M or 0.0992 M (rounded to four significant figures). Therefore, the molar concentration of NaOH solution is 0.0992 M.

Learn more about molarity here:

https://brainly.com/question/31545539

#SPJ11

The solvent can ideally move in both directions through the semipermeable membrane.

The movement of the solvent particles from the concentrated solution to the dilute solution is known as reverse osmosis.

Osmosis is the naturally occurring net movement or diffusion of solvent molecules across a selectively permeable membrane from an area of high water potential to a region of low water potential in a manner that tends to balance the solute concentrations on the two sides.

Osmosis is the process by which a solvent moves between two solutions with various solute concentrations over a semipermeable membrane. The solvent is transferred from the solution with the lower solute concentration to the solution with the greater solute concentration during osmosis.

When subjected to a hydrostatic pressure larger than the osmotic pressure, reverse osmosis is a process by which a solvent travels through a porous membrane in the direction opposite that of natural osmosis.

To know more about Osmosis visit the link:

https://brainly.com/question/1799974?referrer=searchResults

#SPJ4

As the volume of  the sound is seen to increase, the sound that we hear is louder as the amplitude of the sound increases.

Sound is a kind of wave that moves through a medium. We know that sound has to move via several compressions and rare factions. This implies that sound is as well propagated through air. The movement of the sound waves through air is because the air is set into vibration by the sound. Thus, the air is very imprtant in the movement of the sound waves.

With this much said, we can see that if there is more air, there would more molecules that can be set into vibration and the sound wave would tend to increase and that is the deal that we are trying to communicate here.

Thus, the amplitude of air increases as the volume of  the sound gets higher and the sound that we hear is much louder.

Learn more about sound waves:https://brainly.com/question/21995826

#SPJ1

Ethanol is produced when ethane and ethene react with water and a catalyst like sulfuric acid. Adding concentrated sulfuric acid to hot ethanol (acts as a catalyst).

To eliminate carbon dioxide and sulphur dioxide that are created as byproducts, the gases are passed through a sodium hydroxide solution. The main product that is gathered over water is ethene. As a result, dehydration of ethanol produces ethene rather than ethane. The names Mattling acid and Oil of Vitriol are other names for sulfuric acid. It is highly caustic and acidic in nature. It dehydrates and oxidises when  present in higher amounts. It is a clear, syrup-like liquid with no colour or smell. A substance having the chemical formula C 2H 6, ethane is an organic chemical.

Learn more about ethanol here

https://brainly.com/question/25002448

#SPJ4

Answer:

2.16 moles of Au₂S₃  are decomposed.

Explanation:

Given data:

Number of moles of gold (III) sulfide decomposed = ?

Number of moles of gold metal formed = 4.32 mol

Solution:

Chemical equation:

Au₂S₃      →       2Au + 3S

Now we will compare the moles of Au₂S₃ with  gold metal.

                            Au             :           Au₂S₃  

                             2              :                1

                            4.32         :             1/2×4.32 = 2.16    

2.16 moles of Au₂S₃  are decomposed.    

Penicillin is a type of antibiotic that belongs to the class of beta-lactam antibiotics. Penicillin is effective against a broad range of bacteria, particularly Gram-positive bacteria. For the first scenario, the patient should receive 0.5 mL per dose. For the second scenario, the patient needs to take 2/3 of the capsule

To calculate the mL of the drug for the first scenario, we can use the conversion factors:

1 mg = 1000 mcg

0.20 mg/mL = 200 mcg/mL

Given that the patient needs to receive 100 mcg of the drug, we can set up the following equation:

(100 mcg) * (1 mL / 200 mcg) = 0.5 mL

Therefore, the patient should receive 0.5 mL per dose.

A patient is to take the antibiotic penicillin 200 mg tid in divided doses for 7 days. The drug is available in capsules containing 100 mg/capsule. The number of capsules the patient needs to take per dose:

tid = three times a day

Concentration per dose : = 200 mg 3 = 66,66 mg/dose

Number of capsules per dose= Concentration capsule/ Concentration per dose

Number of capsules per dose

= 66,66 mg/dose mg/ 100 capsule

= 0,66 capsule  

=2/3 capsule

The patient needs to take per dose 2/3 of the capsule

To know more about Penicillin:

https://brainly.com/question/33307313

#SPJ4

Problem 1: You will give 0.5 mL per dose.

Problem 2: The patient needs to take 4 capsules per dose.

Problem 1:

To calculate the mL per dose, we can use the formula:

Dose = (Ordered dose × Conversion factor) ÷ Quantity on hand

In this case:

Ordered dose = 100 mcg = 0.1 mg

Conversion factor = 1 mL/0.20 mg

Quantity on hand = 0.20 mg/mL

Using these values in the formula, we get:

Dose = (0.1 mg × 1 mL/0.20 mg) ÷ 1 mL

Dose = 0.5 mL

Therefore, 0.5 mL will be given per dose.

Problem 2:

To calculate the number of capsules per dose, we can use the formula:

Dose = (Ordered dose × Quantity to dispense) ÷ Quantity on hand

In this case:

Ordered dose = 200 mg

Quantity on hand = 100 mg/capsule

First, let's calculate the Quantity to dispense:

Quantity to dispense = Ordered dose ÷ Quantity on hand

Quantity to dispense = 200 mg ÷ 100 mg/capsule

Quantity to dispense = 2 capsules per dose

Now, using the values in the formula, we get:

Dose = (200 mg × 2 capsules per dose) ÷ 100 mg/capsule

Dose = 4 capsules

Therefore, the patient needs to take 4 capsules per dose.

Learn more about medication dosage calculations:

https://brainly.com/question/30310086

#SPJ11

Answer:

A contaminant can enter soil water, soil solids (mineral and organic phases), and soil air.

An iceberg has a volume of 7670 cubic feet. The mass of the ice (in kg) composing the iceberg is 0.0002483 kg

The volume of iceberg = 7670 cubic feet.

Density of ice = 0.917 g/cm\(^{3}\)

so, Density is given by,

Density = mass / volume

density of ice =  (0.917 /1000) kg/cm\(^{3}\)

1 cm\(^{3}\) = 0.00003531 ft\(^{3}\)

therefore,

0.000917 kg/cm\(^{3}\) = (0.000917 × 0.00003531 ) kg/ft\(^{3}\)

                            = 0.0000000324 kg/ft\(^{3}\)

now,putting the values in formula , we get,

Density = mass / volume

mass = density × volume

         = (0.0000000324 × 7670 ) kg

         = 0.0002483 kg

Hence,An iceberg has a volume of 7670 cubic feet. The mass of the ice (in kg) composing the iceberg is 0.0002483 kg.

To learn more about Density here

https://brainly.com/question/15164682

#SPJ1

The "return" statement immediately halts execution of the current method and allows us to pass back a value to the calling method. When encountered in a method, the return statement exits the method's execution flow and transfers control back to the caller.

It is a fundamental mechanism for returning a result or value from a method. By specifying the return keyword followed by the desired value or variable, we can effectively terminate the current method and provide the desired output to the calling code.

The returned value can be utilized in various ways, such as assigning it to a variable, using it in expressions, or passing it as an argument to another method.

Overall, the return statement plays a crucial role in controlling program flow and enabling the exchange of information between methods in a structured manner.

Learn more about calling method here:

https://brainly.com/question/29309558

#SPJ11

Answer: C. iron oxide

Explanation:

In a chemical reaction , the reactants are written on the left hand side followed by a rightarrow and then products are given on the right side of the arrow.

In the given chemical equation :

\(4Fe+3O_2\rightarrow 2Fe_2O_3\)

Reactants are iron (Fe) and oxygen \((O_2)\) and product is iron oxide \((Fe_2O_3)\).

In order to achieve the stable electron configuration, the selenium atom obtains two electrons and adopts the Krypton configuration.

The sulfur family, which also comprises selenium, includes tellurium and polonium. Six electrons make up the outermost shell of this family. Particularly for selenium, the electron configuration is 2-8-18-6. Due to the fact that selenium has six electrons in its outermost shell, it can have a variety of valence values. In order to produce its most stable ion, a selenium atom (Se) would gain two electrons.

Since selenium is a member of the oxygen family, often known as group 16, it contains six valence electrons. It searches for two additional electrons to have a whole outer shell of eight electrons.

To know about electrons

https://brainly.com/question/1255220

#SPJ4

Answer:

Sb

Explanation:

Sb (antimony) is an metalloid

Answer:

MnO₂

Explanation:

The new volume of the ballon at the same temperature is 17.65litres.

What is Boyles Law?

Boyles Law states that the product of pressure and volume is constant until the temperature remains constant.

PV = constant defines the Boyles law.

As given,

V₁ = 15L, P₁ = 1.0atm, P₂= 0.85atm

P₁V₁ = P₂V₂

Substitute values respectively,

1 × 15 = 0.85 × V₂

    V₂ = 15/0.85

     V₂ = 17.65L

Hence, the new volume of the balloon at the same temperature is 17.65L.

To learn more about The Boyles law from the given link.

https://brainly.com/question/1696010

#SPJ4

Igneous: Basalt ,Granite ,Obsidian ,Pumice, Andesite

Sedimentary: Limestone ,Sandstone, hale ,Conglomerate ,Gypsum

Metamorphic: Marble ,Slate, Schist, Gneiss ,Quartzite

Rock is a naturally occurring mineral aggregate that is cohesive and composed of one or more minerals.

These aggregates often take the shape of recognisable and mappable volumes and are the fundamental building block of the solid Earth.

According to the processes that led to the development of a rock, it is typical to classify rocks into three major categories.

There are three main types of rocks: igneous rocks, which are made of molten rock known as magma; sedimentary rocks,

which are made up of rock fragments or materials that have precipitated from solutions; and metamorphic rocks,

which are formed from either igneous or sedimentary rocks and have undergone conditions that have changed their mineralogical composition, texture, and internal structure.

Igneous: Basalt ,Granite ,Obsidian ,Pumice, Andesite

Sedimentary: Limestone ,Sandstone,hale ,Conglomerate ,Gypsum

Metamorphic: Marble ,Slate,Schist, Gneiss ,Quartzite

To know more about rock visit:

https://brainly.com/question/19930528

#SPJ9

assuming question - Group the labels according to the type of rock they describe. Igneous, sedimentary, and metamorphic.

When an organism dies, bacteria degrade it. During the decomposition process, carbon dioxide is emitted into the environment or water. Hence, it has no impact on the decomposers.

When animals breathe or decay (decompose), carbonate rocks are worn, forest fires happen, and volcanoes erupt, carbon dioxide is naturally released into the atmosphere.

Thus, even during process of cellular respiration, carbon dioxide is expelled into the atmosphere.  Hence, it has no impact on the decomposers.

To know more about the Decomposition, here

https://brainly.com/question/18566759

#SPJ1

A girl roller-skating has kinetic energy.

Kinetic energy is the energy of motion. It is the energy possessed by an object due to its movement. In this case, the girl roller-skating has kinetic energy because she is moving.

Potential energy is the energy an object possesses due to its position or configuration. It is the energy an object has stored within it, ready to be released. An object at rest has potential energy because it has the potential to be set in motion and does work.

So, in this case, the girl roller-skating has kinetic energy because she is moving, and not potential energy because she is not at rest.

To learn more about kinetic energy, check out https://brainly.com/question/24933254

Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

\(volume = \frac{mass}{density} \\\)

From the question

mass = 83.7 g

density = 0.785 g/mL

We have

\(volume = \frac{83.7}{0.785} \\ = 106.62420\)

We have the final answer as

Hope this helps you

Answer:

Float a few ping pong balls in your water tub. The slightest breeze will create waves in the water and keep a solid layer of ice from forming for a lot longer.

In the electron configuration 2 8 18 6 for element 34, Selenium:

The statement that applies include:

Selenium is a chemical element with the symbol Se and atomic number 34 and  a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic.

The octet rule refers to the chemical rule of thumb which states that the tendency of atoms to prefer to have eight electrons in the valence shell.

learn more about selenium at:

https://brainly.com/question/24439924

#SPJ1

Nitrous oxide, also known as laughing gas, has an atmospheric lifetime of approximately 114 years.

This means that once it is released into the atmosphere, it can remain there for over a century before it is removed. Nitrous oxide is a potent greenhouse gas and contributes to global warming and climate change.

It is estimated that nitrous oxide is responsible for about 6% of the warming effect of long-lived greenhouse gases. In addition to its impact on climate, nitrous oxide also plays a role in the destruction of the ozone layer, which protects the Earth from harmful UV radiation.

To learn more about nitrous oxide refer to

brainly.com/question/17126006

#SPJ4

First, we'll look at the ideal gas equation,

PV = nRT

The temperature and pressure are said to be constant; Additionally, R is a constant already. Along these lines, we get:

V = constant * n

The direct proportional equation is as follows: As a result, we get:

V/n = constant

V₁/n₁ = V₂/n₂

Replace V₂ with the qualities and address.

V₂ = (4 * 1.48) / 0.864

V₂ = 6.85

In the end, 6.85 Liters of gas must be present, so we must add:

6.85 - 4 = 2.85 liters

The volume of a gas is directly proportional to its mole volume at a fixed temperature and pressure.

To learn more about ideal gas here

https://brainly.com/question/28257995

#SPJ4

Q- At 4.00 L, an expandable vessel contains 0.864 mol of oxygen gas. How many liters of oxygen gas must be added at constant temperature and pressure if you need a total of 1.48mol of oxygen gas in the vessel?

The boiling point of CHCl₃ at a pressure of 101.325 kPa is 61.8°C (143.24°F).

The boiling point is the temperature at which the pressure exerted on a liquid by the environment equals the pressure exerted by the vapor of the liquid. Under these conditions, the application of heat converts the liquid to vapor without raising the temperature.

At any temperature, the liquid partially vaporizes into the space above until the pressure exerted by the vapor reaches a characteristic value called the vapor pressure of the liquid at that temperature. As the temperature rises, the vapor pressure increases. At boiling point, vapor bubbles form in the liquid and rise to the surface.

The boiling point of a liquid changes along the pressure. The normal boiling point is the temperature at which the vapor pressure equals normal atmospheric pressure at sea level (760 mm [29.92 inches] of mercury). At sea level, water boils at 100°C (212°F).

To learn more about boiling point,

https://brainly.com/question/28267496

#SPJ4

The complete question is as follows:

What will the boiling point of CHCL3 be when the atmospheric pressure exerted on its surface is 101.325 KPa?